This 5 CD box with a comprehensive 140pp booklet documents the legendary Ann Arbor festivals organised by a musicians' group including Robert Ashley, Gordon Mumma, Donald Scavarda, George Cacioppo and Roger Reynolds where these composers and others (inc. David Behrman and Pauline Olivieros) presented new works, straight from the press, performed often by themselves. These are radio recordings and the quality is respectable. Neither New York School, nor Darmstadt, these were alternative proposals for how music might be constructed. Mostly instrumental, there are also mixed media and purely electronic pieces featured. For students of this period and of these composers, this will be indispensable. L